My sincere apologies for the delayed response.I am personally going back to answer your unanswered questions. I do not know if you still need this information, but I am going ahead and answering it anyway. You may want to Print the Diagrams for future use.

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shouldn't be too hard. there should be a diagram under the hood somewhere that shows how the belt should go on. I'm think u have a belt tensioner. use a ratchet on the end of the tensioner to loosen the tension ,then u can loosen the old belt to take it off. just reverse the process when putting the new one back on. put the majority of the belt on then use the ratchet on the tensioner again to get it on the rest of the way. hope that helps

Your battery has died since the alternator is not charging it. Jumping the car works to start the engine since the Malibu is using the energy of the second car to start and turn the engine.Its possible that your belt may not be correctly routed or tensioned.

Check your 3.1L engine accessory drive belt routing. The arrow points in the direction in which the drive belt moves.

Fig. 1Serpentine drive belt routing-GM 3.1L engine L/N bodies

Accessory Drive Belt Installation/RemovalGM 3.1L Engine

NOTERoutine inspection of the belt may reveal cracks in the belt ribs. These cracks will not impair the belt performance. The belt should be replaced if the belt slip occurs if a section of the belt ribs are missing. A single serpentine drive belt is used to drive all engine accessories. All belt driven accessories are rigidly mounted with the belt tension maintained by a spring loaded tensioner. The indicator on the movable portion of the tensioner must be within the limits of the marks of the stationary portion of the tensioner. Any reading outside of these limits indicates either a defective belt or tensioner.

CLICKon the following LINK. It has the Serpentine Diagrams you will need.

The standard rule to removal the Serpentine Belt:1. Find the Tensioner(s). (See Diagrams on Link) 2. Rotate/Move the Tensioner away from contact with the belt and towards the area where the belt is not in contact with the Tensioner Pulley. The Tensioner is spring loaded, and is hard to rotate/move.3. Remove the loosened belt off one of the other more easily accessed Pulleys.If you would: Before Clicking: Let me know if this helped you, or if you have any additional information or questions. Feel Free to contact me at FixYa.com!

The path should be listed under the hood on a decal, you will need a breakerbar and apropriate sized socket to compress the idler to put the belt over that pulley... just remember to put the breaker bar through the belt before compressing the idler assembly .